Learning and Sharing Info Security IT Knowledge
CloudFlare is the world’s leading provider of CDN solutions and domain name registration resolution solutions, and Workers is a serverless application based on its powerful CDN global cloud network.There are no much different to install Shadow Daemon (ShadowD) on either Ubuntu18.04 or CentOS7.
Please refer my post: Simplest Steps to Install Docker and Docker Compose into Ubuntu (16.04,18.04) and CentOS 7
Ubuntu just need to issue three commands:
apt-get update
apt-get install docker
apt-get install docker-compose
For CentOS, there is one commands more:
yum install docker
curl -L "https://github.com/docker/compose/releases/download/1.25.4/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
After that, you can start and enable docker service, also verify docker and docker-compose version:
systemctl enable docker
systemctl start docker
docker --version
docker-compose --verison
This post is going to use an java code example to show the process how to analysis linux system performance issue using all kinds of Linux internal commands without other third party tools.
public class JavaDemo2 {
public static void main(String[] args) {
while (true){
System.out.println(new java.util.Random().nextInt(77778888));
}
}
}
[[email protected] ~]# top
top - 11:28:50 up 7 min, 2 users, load average: 0.73, 0.39, 0.18
Tasks: 230 total, 1 running, 229 sleeping, 0 stopped, 0 zombie
Cpu(s): 1.0%us, 2.3%sy, 0.0%ni, 96.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 1906280k total, 649948k used, 1256332k free, 21164k buffers
Swap: 2097148k total, 0k used, 2097148k free, 203820k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3672 root 20 0 3158m 94m 11m S 15.6 5.1 0:13.67 java
3397 root 20 0 100m 5388 3396 S 9.3 0.3 0:09.00 sshd
39 root 20 0 0 0 0 S 1.7 0.0 0:00.25 events/4
37 root 20 0 0 0 0 S 1.0 0.0 0:00.39 events/2
35 root 20 0 0 0 0 S 0.3 0.0 0:01.27 events/0
36 root 20 0 0 0 0 S 0.3 0.0 0:00.34 events/1
41 root 20 0 0 0 0 S 0.3 0.0 0:00.24 events/6
[[email protected] ~]# uptime
11:29:09 up 7 min, 2 users, load average: 0.52, 0.36, 0.18
CloudFlare has always been known to webmasters for its domain name hosting service and CDN service. Recently I just found a free CloudFlare Workers service, which is a service that can run a specific JavaScript when accessing a web page and found a good use case to use JSPROXY building a Workers-Proxy (a reverse proxy). Here is my testing Site URL build before: http://proxy.51sec.org Pre-requisites What you need is a free CloudFlare account. Nothing else.…
I am having a couple of low memory vm in the cloud to run some basic testing lab. It always gets me a notification for the performance , especially on memory since they are only have 587M memory.
You cannot copy content from 51sec.org.
